diff --git a/src/llama-batch.cpp b/src/llama-batch.cpp
index f8227777f19de..eb15d2c41f1e2 100644
--- a/src/llama-batch.cpp
+++ b/src/llama-batch.cpp
@@ -157,6 +157,8 @@ bool llama_batch_allocr::init(
         n_outputs += batch.logits[i] != 0;
     }
 
+    has_cpl = false;
+
     // determine coupled sequences
     // these are pairs of sequences that have at least one token in the input batch that is assigned to both of them
     for (int32_t i = 0; i < batch.n_tokens; ++i) {
diff --git a/src/llama-batch.h b/src/llama-batch.h
index 1a24440ba7562..c811aef439588 100644
--- a/src/llama-batch.h
+++ b/src/llama-batch.h
@@ -117,7 +117,7 @@ class llama_batch_allocr {
     using seq_cpl_t = std::vector<bool>;
 
     // helper flag to quickly determine if there are any coupled sequences in the batch
-    bool has_cpl;
+    bool has_cpl = false;
 
     std::vector<pos_set_t> seq_pos; // seq_pos[s]: the set of positions in sequence s
     std::vector<seq_cpl_t> seq_cpl; // seq_cpl[s0][s1]: if sequence s0 is coupled to sequence s1